1111001020002 has 64 divisors (see below), whose sum is σ = 2576406528000. Its totient is φ = 354208521744.

The previous prime is 1111001019983. The next prime is 1111001020007. The reversal of 1111001020002 is 2000201001111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1111001020007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36945649 + ... + 36975707.

It is an arithmetic number, because the mean of its divisors is an integer number (40256352000).

Almost surely, 2^{1111001020002} is an apocalyptic number.

1111001020002 is an abundant number, since it is smaller than the sum of its proper divisors (1465405507998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111001020002 is a wasteful number, since it uses less digits than its factorization.

1111001020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59852 (or 59846 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1111001020002 its reverse (2000201001111), we get a palindrome (3111202021113).

The spelling of 1111001020002 in words is "one trillion, one hundred eleven billion, one million, twenty thousand, two".